Symptoms:

*Note; This article applies to Sibelius 7.1 to 7.5, for Sibelius v8.0 and later, please see this separate article.

You are unable to activate Sibelius or the Sibelius License Server. You receive the following error when trying to activate:

Problem:

This can happen with any of the following:

• Your computer is unable to connect to the internet
• Ports 3443 and 443 are being blocked
• Proxy or other firewall blocking the connection to the activation servers